How to set up mobile internet on Xiaomi phone: from APN to 5G network selection

Why Xiaomi’s Mobile Internet May Not Work – and How to Fix It

You just put it in. SIM-The new Xiaomi Redmi Note 12 or POCO X5 Pro, but the Internet stubbornly refuses to connect? MIUI quit 4G, This problem is familiar to many owners of Xiaomi smartphones - and in 90% of cases it is solved in 5 minutes without going to the service center.

Xiaomi’s Mobile Internet Failures Are Divided into Three Categories: Wrong Settings APN (Access points), program errors MIUI (especially after updates and hardware limitations (e.g. lack of range support) 5G In this article, we will discuss all the ways of setting, from basic to advanced, including manual addition. APN, Priority network selection and diagnosis SIM-If you are a Xiaomi 13 Ultra or Mix Fold 3 user, you will find some tips for speed optimization. 5G.

Before you start settings, make sure that:

• 📶 SIM-The card is activated and maintained 4G/5G (check with the operator).
• 📱 The phone is unlocked to work with your operator (relevant for devices purchased abroad).
• 💰 There is enough money in the account to connect to the Internet.

If everything is fine, but the Internet is still not working, read on.

Method 1: Automatically configure mobile internet (for most users)

The simplest method is to let the phone load the network settings from the operator itself, which works 80 percent of the time and takes less than a minute.

1. Open the settings (cog icon on the desktop).
2. Go to section. SIM-maps and mobile networks.
3. Choose yours. SIM-card (if two of them).
4. Slip on Access Point (APN).
5. In the upper right corner, press three dots (⋮) and select Reset to default values.
6. Confirm the action and restart the phone.

After the reboot, the phone should automatically download the correct APN settings from your carrier. If that doesn't happen, move on to the next method.

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If after discharge APN Internet does not work, try to manually select the operator in the settings: → SIM-map → Choice of network → Network search: sometimes the phone sticks to the wrong network (e.g, 2G instead 4G).

Automatic settings may not work in the following cases:

• 🌍 You are on roaming (especially abroad).
• 📡 Your operator recently updated the parameters APN (MegaFon and Tele2 in 2026).
• 🔄 The phone recently received an update. MIUI, slack-out.

Make sure that the data transfer is enabled|Check the balance. SIM-map|Reboot the phone.|Try inserting. SIM (a) in the other slot (if two of them are in the)

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Method 2: Manual addition of APN for MTS, Beeline, MegaFon, Tele2 and Yota

If the automatic setup doesn’t work, you’ll have to enter your APN settings manually, and here are the up-to-date data for all major Russian carriers for 2026 (please note: 4G and 5G may be different!).

Instructions for addition:

1. Open the Settings. → SIM-maps and mobile networks → Access points (APN).
2. Click on + (addition icon) in the upper right corner.
3. Fill in the fields according to the table below (leave the rest of the parameters unchanged).
4. Save the settings and restart the phone.

Once you save your new access point, select it from the APN list (the name tag should appear). If the Internet doesn't work right away, try switching to 4G Only mode in your network settings.

⚠️ Note: On Xiaomi phones with MIUI 14+ afterhand APN You may need to disable the "Court" function. APN" In the settings of the access point, otherwise the system will ignore your settings.

Method 3: Selecting a Priority Network (4G, 5G, or 3G Only)

If the mobile internet is unstable or too slow, the problem may lie in the wrong type of network, for example, in some regions 5G is not yet deployed, but the phone stubbornly tries to connect to it, losing connection with 4G. Or vice versa: the carrier already supports 5G, but your Redmi 10 by default uses only 4G.

To manually prioritize the network:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Tap by Network Type (or Preferred Network Type on older versions of MIUI).
4. Choose one of the options: 📶 Only 4G (LTE) — Stability (recommended for most regions). 🚀 5G/4G/3G/2G (Auto: for maximum speed (if the operator supports) 5G). 🐢 Only 3G — if 4G It doesn't catch, but you need the internet. ⚡ Only 5G — for testing (may not work in roaming).

On phones with 5G support (for example, Xiaomi 12T Pro or POCO F5 Pro) after selecting a 5G/4G/3G/2G network, an additional switch Enable 5G - remember to activate it!

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If the Internet is gone after the network type change, return the settings to the Auto and restart the phone. In some cases, MIUI blocks manual settings after the update.

For Xiaomi owners with MediaTek processors (such as the Redmi Note 11 or POCO M5), there is a caveat: the Network Type menu may not have 5G option, even if the phone supports it.

1. Install the MTK Engineering Mode app from the Play Market.
2. Go to MTK Settings → BandMode.
3. Select LTE/NR5G and save the settings.
4. Reboot the phone.

Method 4: Diagnostics SIM-Cards and slots (if nothing helps)

If after all the manipulations, the mobile Internet still does not work, the problem may be hardware: malfunctioning. SIM-A card, a contaminated slot, or a damaged modem. Here's how to check:

• 🔄 Replace it. SIM-A card to another slot (if there are two) on some Xiaomi models, the first slot works more stable.
• 🧹 Clear the contacts. SIM-soft-cloth cards (do not use alcohol!).
• 📱 Check it out. SIM In another phone, if there is no internet, the card is defective.
• 🔍 Run the modem test through the engineering menu (instruction below).

To check the modem on Xiaomi:

1. In the phone app, dial the code ##4636##.
2. Select Phone Information.
3. Scroll down to the Set preferred network type block.
4. If it's empty or it says Unknown, the modem doesn't recognize it. SIM-card (repair required).

⚠️ Attention: On phones with MIUI 13+ In this case, use the Network Signal Guru app (available on the Play Market) to diagnose the network.

If the test shows that the modem is not working:

• Try resetting your network settings (Settings → Memory → Resetting → Resetting your mobile network settings).
• Update the firmware to the latest version (sometimes modem bugs are fixed in patches).
• Contact the service center – you may need to flash the modem or replace the antenna module.

Method 5: Optimize 4G/5G speeds on Xiaomi (for advanced users)

Even if the internet works, it can be far from the fastest, and on Xiaomi, it’s often due to suboptimal range settings or MIUI limitations.

1. Include carrier aggregation (CA):

Aggregation allows the phone to use multiple frequencies simultaneously, increasing the speed.

1. Please dial in the phone app: ##4636##.
2. Go to the phone information.
3. Scroll to Set preferred network type and select LTE (all bands).
4. Go back and check if Enable LTE CA has appeared – if so, turn it on.

2. Set up priority 4G/5G bands:

On phones with Qualcomm Snapdragon (such as Xiaomi 13 or POCO F4 GT), you can manually set ranges for the best signal:

1. Install the Network Cell Info Lite app.
2. See what bands your operator uses in your area.
3. With the QPST (requires a PC) or MTK Engineering Mode app, block unnecessary ranges, leaving only those that give the best signal.

3. Turn off the MIUI background restriction:

MIUI by default restricts background data transmission to save battery life.

1. Go to Settings → Applications → Application Management.
2. Select an application (for example, a browser or messenger).
3. Slip on Data Transfer and enable Background Data Transfer and Auto Run.

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If you have Xiaomi with 5G support but you're not doing it, check if the power saving mode is on. In MIUI, it automatically limits the modem's performance. Turn it off in Settings → Battery → Power saving mode.

Solving specific problems with mobile Internet on Xiaomi

Sometimes mobile Internet on Xiaomi behaves illogically: it works in some applications but does not work in others, or disappears after a call.

Problem 1: The Internet is, but not working messengers (WhatsApp, Telegram) or social networks

This is an indication that the operator is blocking certain ports or protocols.

• 🔄 Switch the type. APN Default,supl to default,supl,ia (adds support) IMS).
• 🛡️ Turn it off. VPN (If you use it, some operators block traffic through the VPN.
• 📡 Enable Roaming in the settings SIM-cards (yes, even if you are not roaming - this sometimes helps to bypass restrictions).

Problem 2: 4G/5G goes missing after the call

This is a well-known MIUI problem involving switching between voice and data.

• 📞 Enable VoLTE (voice through) 4G) customized SIM-map.
• 🔄 Turn off the switch to 3G for calls (if such a point exists).
• 📱 Update the firmware - in new versions MIUI This bug is often fixed.

Problem 3: Phone doesn't catch 5G, though carrier supports it

The reasons can range from incorrect settings to hardware limitations.

• 📋 Make sure your Xiaomi model is truly supportive 5G (The Redmi Note 11 is not a good one. POCO X5 Pro, yes).
• 🌍 Check the cover. 5G in your area on the operator's website.
• 🔧 Manually add it. APN for 5G (for MTS: mts.ru, for MegaFon: Internet.lte).
• 📡 On the engineering menu (##4636##) choose NR/LTE/TD-SCDMA/GSM network-setting.

If nothing helps, try resetting your network settings (Settings → Memory → Settings Reset → Mobile Network Settings Reset) or contact your carrier to check for 5G support on your tariff.

FAQ: Frequent questions about setting up mobile Internet on Xiaomi